I'll look at doing that. I had an interesting test last night, a 'friendly' USA ssn pair acting as listening enemy and four RAN ships, DDG and FFG in formation.
Using my analysis tool AIWindow I watched the change in degree of contact quality by the enemy as I moved ship station with and without restricting its speed (again using tool to restrict max speed. Keeping ship speed below 'cruise' preferably to about 15 kts. made a big difference to enemy getting exact fix as against approx position (test started with approx position known of the test ship changing station.
I'm thinking of something where the max speed for station change is restricted to double the current group speed. I have a vague recollection that ships in formation had a restricted speed when group was at 'creep' I'll check that out tonight.
(edit) PS, I'm thinking also same thing for ASW station doing sprint and drift, the sprint maybe is too fast?